/*++

Copyright (c) 1991 - 2001 Microsoft Corporation

Module Name:

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Abstract:

    This header file contains all the global
    definitions for the display device.

Author:

    Wesley Witt (wesw) 1-Oct-2001

Environment:

    Kernel mode only.

Notes:


--*/


//
// Global defines
//

#define DEFAULT_DISPLAY_WIDTH               (128)
#define DEFAULT_DISPLAY_HEIGHT              (64)

#define DISPLAY_STARTING_PARAM              L"Startup BitMap"
#define DISPLAY_CHECKDISK_PARAM             L"CheckDisk BitMap"
#define DISPLAY_READY_PARAM                 L"Ready BitMap"
#define DISPLAY_SHUTDOWN_PARAM              L"Shutdown BitMap"
#define DISPLAY_UPDATE_PARAM                L"Update BitMap"

//
// Device extension
//

typedef struct _DISPLAY_DEVICE_EXTENSION : _DEVICE_EXTENSION {
    FAST_MUTEX                      DisplayMutex;
    BOOLEAN                         AllowWrites;
    PVOID                           StartingBitmap;
    PVOID                           CheckDiskBitmap;
    PVOID                           ReadyBitmap;
    PVOID                           ShutdownBitmap;
    PVOID                           UpdateBitmap;
    USHORT                          DisplayType;
    USHORT                          DisplayHeight;
    USHORT                          DisplayWidth;
} DISPLAY_DEVICE_EXTENSION, *PDISPLAY_DEVICE_EXTENSION;


//
// Display specific functions
//

NTSTATUS
SaDisplayLoadAllBitmaps(
    IN PDISPLAY_DEVICE_EXTENSION DeviceExtension,
    IN PUNICODE_STRING RegistryPath
    );

NTSTATUS
SaDisplayClearDisplay(
    IN PDISPLAY_DEVICE_EXTENSION DisplayDeviceExtension
    );

NTSTATUS
SaDisplayDisplayBitmap(
    IN PDISPLAY_DEVICE_EXTENSION DisplayDeviceExtension,
    IN PSA_DISPLAY_SHOW_MESSAGE Bitmap
    );

NTSTATUS
SaDisplayStartDevice(
    IN PDISPLAY_DEVICE_EXTENSION DeviceExtension
    );

NTSTATUS
SaDisplayIoValidation(
    IN PDISPLAY_DEVICE_EXTENSION DeviceExtension,
    IN PIRP Irp,
    PIO_STACK_LOCATION IrpSp
    );

NTSTATUS
SaDisplayDeviceInitialization(
    IN PSAPORT_DRIVER_EXTENSION DriverExtension
    );

NTSTATUS
SaDisplayShutdownNotification(
    IN PDISPLAY_DEVICE_EXTENSION DeviceExtension,
    IN PIRP Irp,
    PIO_STACK_LOCATION IrpSp
    );